# CVE-2026-98727: nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known

CVE-2026-98727 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98727, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98727
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 18, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98727

## Description

In the Linux kernel, the following vulnerability has been resolved:  nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known  The namespace head is marked zoned at allocation time based only on the command set identifier.  If the zone info query reports a zero zone size, the path namespace is registered without zoned limits while the head still advertises the zoned capability with a zone size of zero, and reporting zones or writing to the head then shifts by ilog2(0).  Drop the zoned feature from the head allocation and let the head limits refresh stack it in from the path namespace instead.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.113-1 | [DEBIAN-CVE-2026-98727](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98727.md) | Oct 19, 2026 |
| Linux | linux Debian 14 | 7.2.10-1 | [DEBIAN-CVE-2026-98727](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98727.md) | Oct 19, 2026 |
| Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.113-1~deb12u1 | [DEBIAN-CVE-2026-98727](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98727.md) | Oct 19, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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